测井技术2017，Vol.41Issue(3)：260-265,6.DOI:10.16489/j.issn.1004-1338.2017.03.003
反射声波测井波场分离方法研究
Reserch on Improved Wave Seperation Method for Single-well Imaging
摘要
Abstract
Single-well imaging technique shows a good prospect in the applications for exploration of unconventional resources.However, in order to image discontinuities, the weak reflections in sonic waveforms need to be enhanced while the large-amplitude direct arrivals need to be suppressed.The wave separation method for the single-well imaging technique is optimized, under the prerequisite conditions without changing the apparatus and the measurement mode.The dispersive characteristics of the mode waves are proposed to be considered during the filtering processing, and the slowness-time semblance method is introduced for a more accurate estimation of the borehole direct waves.As a result, the parametric prediction filtering method widely used in the SWI technique is improved.Application of the improved method to field data processing enhances the efficiency of the reflection extraction.关键词
反射声波测井/波场分离/慢度-时间相干法/线性预测滤波法Key words
single-well imaging/wave seperation method/slownessvtime semblance method/parametric prediction filtering method分类
天文与地球科学引用本文复制引用
宫昊,陈浩,何晓,卫建清,王秀明..反射声波测井波场分离方法研究[J].测井技术,2017,41(3):260-265,6.基金项目
国家自然科学基金(11374322、11134011、11574347) （11374322、11134011、11574347）
